Union sight glass withDC 24V Stainless steel lighting with Scraper cleaner - China Donjoy Technology
Source hotsale Sanitary Stainless Steel Flange Sight Glass with Wiper on m.alibaba.com
A R Khan GLASS WORKS - Sight Glass Wiper Assembly :- Wipers of Sight Glass Wiper Assembly are built into round sight glasses to prevent crystallization of the media inside the vessel